Name
- Greaves, John, Professor of Astronomy at Oxford1
- Gregory XIII, Pope, 1502-15851
- Gregory XV, Pope, 1554-16231
- Grey, Thomas, Baron Grey of Groby, politician, regicide and army commander, 1622-16571
- Gribaldi, Vespasiano, of Cherio; alias Moffa; bailiff and landowner, fl 1547-15491
- Grymontius, Antonius, physician and correspondent of Stephanus Colossaeus, fl 15501
- Gustav II Adolf, King of Sweden, called The Great, 1594-16321
- Gustavus Adolphus II, King of Sweden1
- Guy, Henry, politician, 1631-17101
- Guéretin, -, envoy of Frederick V, Elector Palatine, fl 1615-16171
- Habsburg, Ferdinand III Ernst, Emperor of Germany, 1608-16571
- Hamilton nÚe Hooftman, Marie, wife of Capt J Hamilton1
- Hamilton, John, Captain1
- Haneton, Philippe, French diplomat1
- Hanger, John, merchant1
- Hanse Towns1
- Harington, Anne, wife of John 1st Baron Harington of Exton1
- Harington, John, 1st Baron Harington of Exton, 1539-16131
- Harington, John, 2nd Baron Harington of Exton1
- Hartlib, Samuel, writer of education and husbandry1